1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
uranmaximum [27]
3 years ago
7

Look at the cups shown below (please note images are not drawn to scale):

Mathematics
1 answer:
Andrews [41]3 years ago
4 0

Cup A

<em><u>Formula</u></em>

V = 1/3 pi r^2 h

<em><u>Givens</u></em>

r = d/2 = 2/2 = 1 inch

pi = 3.14

h = 4 inches

<em><u>Solution</u></em>

V = 1/3 * 3.14 * 1^2 * 4

V = 4.187

Cup B

<em><u>Formula</u></em>

V = pi * r^2 * h

<em><u>Givens</u></em>

pi = 3.14

r = d/2 = 2/2 = 1

h = 6

<em><u>Solution</u></em>

V = pi * r^2 * h

V = 3.14 * 1^2 * 6

V = 18.84

<em><u>Answer</u></em>

VB - VA = 18.84 cu in - 4.187 = 14.65 = 14.7 Rounded.

Answer C

You might be interested in
Pls help - Solve for x​
Stels [109]

Answer:

-3

3x/(x^2+6x) = 1 is this the qstn?

if so then the ans is -3

5 0
3 years ago
A store buys 8 sweaters for $72 and sells them for $288. How much profit does the store make per sweater?
Y_Kistochka [10]

Answer:

f5f5

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The random variable x has the following probability distribution: x f(x) 0 .25 1 .20 2 .15 3 .30 4 .10 a. Is this probability di
Reptile [31]

Answer and Explanation:

Given : The random variable x has the following probability distribution.

To find :

a. Is this probability distribution valid? Explain and list the requirements for a valid probability distribution.

b. Calculate the expected value of x.

c. Calculate the variance of x.

d. Calculate the standard deviation of x.

Solution :

First we create the table as per requirements,

x      P(x)         xP(x)           x²            x²P(x)

0    0.25           0               0                0

1     0.20        0.20             1              0.20

2    0.15          0.3               4             0.6

3    0.30         0.9               9             2.7

4    0.10          0.4               16             1.6

   ∑P(x)=1     ∑xP(x)=1.8               ∑x²P(x)=5.1

a) To determine that table shows a probability distribution we add up all five probabilities if the sum is 1 then it is a valid distribution.

\sum P(X)=0.25+0.20+0.15+0.30+0.10

\sum P(X)=1

Yes it is a probability distribution.

b) The expected value of x is defined as

E(x)=\sum xP(x)=1.8

c) The variance of x is defined as

V=\sum x^2P(x)-(\sum xP(x))^2\\V=5.1-(1.8)^2\\V=5.1-3.24\\V=1.86

d) The standard deviation of x is  defined as

\sigma=\sqrt{V}

\sigma=\sqrt{1.86}

\sigma=1.136

5 0
3 years ago
X + 5y = 28<br> - x - 2y = -13
bazaltina [42]

Answer:

x=3

y=5

Step-by-step explanation:

x+5y=28 (i)

-x-2y=-13. (ii)

add equation 2 from equation 1

x+5y=28

-x-2y=-13

3y=15

y=5

put the value of y in equation 1

x+5y=28

x+5*5=28

x+25=28

x=28-25

x=3

8 0
3 years ago
During a test, 3 out of 200 television sets were found to be defective. About how many defective sets would you expect out of 4,
pshichka [43]

Answer:

60?

Step-by-step explanation:

4000/200 = 20

20 × 3 =60

5 0
3 years ago
Other questions:
  • A city sewer pipe has a diameter of 7 ft and a length of 100 ft. Find the volume of the pipe. Use 3.14 as
    9·2 answers
  • A 50 meter path surrounds a rectangular garden . The width of the garden is two-thirds its length. find its area.
    12·1 answer
  • I don't know plz help me
    13·1 answer
  • Evaluate 9 P 5.<br><br> 15,120<br> 45<br> 362,880
    9·2 answers
  • A six-foot-tall basketball player shoots a ball towards the basket and misses. The height in feet of the ball up off the floor o
    15·1 answer
  • In 1993, funding for a program increased by 0.79 billion dollars from the funding in 1992. In 1994, the increase was 0.49 billio
    13·1 answer
  • Va rog mult sa ma ajutati ,imi trebuie neaparat . plz
    7·1 answer
  • Colin invests £5000 into his bank account.
    9·1 answer
  • 1400 divided by 32 Banana anan
    7·1 answer
  • A delivery truck is transporting boxes of two sizes: large and small. The combined weight of a large box and a small box is 60 p
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!